Prevent problems before they happen with Aquascape Bacteria Bubble Tabs. With a simple weekly dose you can encourage a strong biological balance and maintain clean, clear, and healthy water conditions in your pond. The eco-friendly Bacteria Bubble Tabs contain 8 pure strains of concentrated beneficial bacterial, including enzymes, to ensure your pond or water feature is always clean! With 36 natural cleaning tablets per container, you can treat up to 3,600 gallons of water, 100 gallons for each tablet!